Filter 'foo' is not defined bug - it just returns void

[paveljanda]

Let's have an example in template:

{var $s = 'Hello'}
{$s|foo}

And filter defined:

public static function foo($bar)
{
    if ($bar === 'Hello') {
        return $bar;
    }
}

That works well, but when we change the condition in filter to if ($bar === 'Helloooo') {, latte says that that filter is not defined.

[dg]

I am unable to reproduce it.

$latte = new Latte\Engine;
$latte->setLoader(new Latte\Loaders\StringLoader);

function foo($bar)
{
    if ($bar === 'Hello') {
        return $bar;
    }
}

$latte->addFilter('foo', 'foo');

$latte->render(<<<'EOD'
{var $s = 'Helloooo'}
{$s|foo}
EOD
, []);

For multifilters added via addFilter(NULL, ...) return empty string ''.

[paveljanda]

I am able to reproduce it within nette fw:

1, composer create-project nette/web-project
2, Add filters definition to config.neon:

nette.latteFactory:
    setup:
        - addFilter(null, [\App\FooFilters(), loader])

3, Create filters class:

namespace App;

use Nette;

class FooFilters extends Nette\Object
{

    public static function loader($filter)
    {
        if (method_exists(__CLASS__, $filter)) {
            return call_user_func_array([__CLASS__, $filter], array_slice(func_get_args(), 1));
        }

        return NULL;
    }


    public static function foo($bar)
    {
        if ($bar === 'bar') {
            return $bar;
        }
    }

}

4, Edit @layout.latte to look like this:

{var $bar = 'bar'}
{$bar|foo}

Now the filter works fine, but when you change {var $bar = 'bar'} to {var $bar = 'bars'}, than it stops working.

[hrach]

For multifilters added via addFilter(NULL, ...) return empty string ''.

that's your solution, as David pointed out.

[paveljanda]

Oh i see the point. My mistake. Thanks.